CA2063918A1 - Acoustic pipe length measuring apparatus - Google Patents

Acoustic pipe length measuring apparatus

Info

Publication number
CA2063918A1
CA2063918A1 CA2063918A CA2063918A CA2063918A1 CA 2063918 A1 CA2063918 A1 CA 2063918A1 CA 2063918 A CA2063918 A CA 2063918A CA 2063918 A CA2063918 A CA 2063918A CA 2063918 A1 CA2063918 A1 CA 2063918A1
Authority
CA
Canada
Prior art keywords
pipe
sonic velocity
measuring apparatus
length measuring
pipe length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2063918A
Other languages
French (fr)
Other versions
CA2063918C (en
Inventor
Hiroshi Nakamura
Takanori Itoh
Masaki Natori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Gas Co Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3087921A external-priority patent/JP3023199B2/en
Priority claimed from JP8792391A external-priority patent/JP2745165B2/en
Application filed by Individual filed Critical Individual
Publication of CA2063918A1 publication Critical patent/CA2063918A1/en
Application granted granted Critical
Publication of CA2063918C publication Critical patent/CA2063918C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/902—Speed of sound compensation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

An acoustic pipe length measuring apparatus for measuring the length of a pipe-like member in accordance with the time between the emission of a pulse-like sound wave from a speaker at one end there of and the collection of sound waves reflected at the other end thereof, by a microphone, and a sonic velocity, in which data of a sonic velocity at a reference temperature of a gas present in the pipe-like member is stored in memory, and a sonic velocity value at a temperature of gas detected in the pipe-like member is computed with the use of the data of a sonic velocity value which is read from the memory in accordance with a kind of gas in the pipe-like member, thereby it is possible to calculate the length of the pipe-like member from the sonic velocity value obtained through the computation and the above-mentioned time.
CA002063918A 1991-03-27 1992-03-25 Acoustic pipe length measuring apparatus Expired - Fee Related CA2063918C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3-87923 1991-03-27
JP3-87921 1991-03-27
JP3087921A JP3023199B2 (en) 1991-03-27 1991-03-27 Acoustic pipe length measuring instrument
JP8792391A JP2745165B2 (en) 1991-03-27 1991-03-27 Acoustic pipe length measuring instrument

Publications (2)

Publication Number Publication Date
CA2063918A1 true CA2063918A1 (en) 1992-09-28
CA2063918C CA2063918C (en) 1999-10-05

Family

ID=26429147

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002063918A Expired - Fee Related CA2063918C (en) 1991-03-27 1992-03-25 Acoustic pipe length measuring apparatus

Country Status (4)

Country Link
US (1) US5195059A (en)
EP (1) EP0506406B1 (en)
CA (1) CA2063918C (en)
DE (1) DE69202091T2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3048284B2 (en) * 1993-02-03 2000-06-05 東京瓦斯株式会社 Sound velocity calibration device for acoustic pipe length measurement system
JPH07239322A (en) * 1993-04-21 1995-09-12 Mas Fab Gustav Eirich Method and equipment for deciding molding characteristic of sand
WO1997020204A1 (en) * 1995-12-01 1997-06-05 System Planning Corporation Method and apparatus for detecting recyclable items
US5754495A (en) * 1996-05-13 1998-05-19 Halliburton Energy Services, Inc. Method for acoustic determination of the length of a fluid conduit
US6698290B1 (en) * 2002-12-30 2004-03-02 Motorola, Inc. Adaptive equalizer for variable length sound tubes utilizing an acoustical time of flight measurement
US7016503B2 (en) * 2002-12-30 2006-03-21 Motorola, Inc. Adaptive equalizer for variable length sound tubes utilizing an acoustic pressure response measurement
US9598955B2 (en) * 2013-12-23 2017-03-21 Halliburton Energy Services, Inc. Wellbore tubular length determination using pulse-echo measurements
DE102014011924A1 (en) * 2014-08-12 2016-02-18 Hydac Electronic Gmbh Device for determining at least part of the respective in each case extendable extension length of a telescopic arm

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584676A (en) * 1982-03-15 1986-04-22 Measurement Systems, Inc. Method of and apparatus for pipe length measurement
JPS6478184A (en) * 1987-06-24 1989-03-23 Nippon Kokan Kk Method and device for deriving length of tubular body by utilizing acoustic wave
GB8718208D0 (en) * 1987-07-31 1987-09-09 Bode R Acoustical length measurement
JPS6472184A (en) * 1987-09-11 1989-03-17 Sharp Kk Heat roller for fixation

Also Published As

Publication number Publication date
DE69202091T2 (en) 1995-12-14
DE69202091D1 (en) 1995-05-24
EP0506406A1 (en) 1992-09-30
CA2063918C (en) 1999-10-05
EP0506406B1 (en) 1995-04-19
US5195059A (en) 1993-03-16

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20050329